<ARTICLE> 5 <MULTIPLIER> 1,000 <PERIOD-TYPE> YEAR <FISCAL-YEAR-END> DEC-31-1997 <PERIOD-START> JAN-01-1997 <PERIOD-END> DEC-31-1997 <CASH> 18,068 <SECURITIES> 24,878 <RECEIVABLES> 36,180 <ALLOWANCES> (3,200) <INVENTORY> 304 <CURRENT-ASSETS> 90,038 <PP&E> 21,255 <DEPRECIATION> (9,153) <TOTAL-ASSETS> 119,877 <CURRENT-LIABILITIES> 15,735 <BONDS> 0 <PREFERRED-MANDATORY> 0 <PREFERRED> 0 <COMMON> 25 <OTHER-SE> 103,948 <TOTAL-LIABILITY-AND-EQUITY> 119,877 <SALES> 113,735 <TOTAL-REVENUES> 113,735 <CGS> 34,869 <TOTAL-COSTS> 34,869 <OTHER-EXPENSES> 55,826 <LOSS-PROVISION> 0 <INTEREST-EXPENSE> 81 <INCOME-PRETAX> 24,919 <INCOME-TAX> 7,354 <INCOME-CONTINUING> 17,565 <DISCONTINUED> 0 <EXTRAORDINARY> 0 <CHANGES> 0 <NET-INCOME> 17,565 <EPS-PRIMARY> 0.72 <EPS-DILUTED> 0.68